Year	Number
2004-01-01	198319
2005-01-01	228516
2006-01-01	271415
2007-01-01	336462
2008-01-01	387630
2009-01-01	415724
2010-01-01	373337
2011-01-01	363717
2012-01-01	403415
2013-01-01	443168
2014-01-01	462900
2015-01-01	495461
2016-01-01	558055